AT SEA:  (EDITORIAL USE ONLY)  (FILE PHOTO)  A P2V Neptune U.S. patrol plane flies over a Soviet freighter during the Cuban missile crisis in this 1962 photograph. Former Russian and U.S. officials attending a conference commemorating the 40th anniversary of the missile crisis October 2002 in Cuba said that the world was closer to a nuclear conflict during the 1962 standoff between Cuba and the U.S., than governments were aware of.  (Photo by Getty Images)
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